Free Journey Level Plumber Exam Questions That Helps Candidates Pass

The UPC requires vent terminals to be located at least 12 inches away from property lines, alleys, streets, or driveways to avoid exposure of sewer gases to public areas. This clearance ensures both health and safety compliance. Correct answer: B. 12 inches.

The UPC drainage tables assign DFU limits to pipe sizes and slopes. For a 2-inch horizontal branch, the maximum load is 8 DFUs. Beyond this, the pipe cannot carry peak discharge without risking surcharge or blockages. Proper DFU assignment ensures the pipe diameter is sufficient to maintain hydraulic flow, safeguard trap seals, and prevent system failures. Correct answer: C. 8 DFUs.

The UPC requires residential bathtubs to deliver water at a minimum of 105°F and a maximum of 120°F. This ensures user comfort and scald protection. Correct answer: B. 105°F.

According to UPC drainage tables, a 2-inch horizontal branch may carry up to 8 DFUs. This ensures the pipe can handle expected fixture discharges without risk of overload. Exceeding this capacity requires upsizing. Correct answer: B. 8 DFUs.

UPC Section 804 requires that the trap for a clothes washer standpipe be located not less than 6 inches and not more than 24 inches above the floor. This ensures the pump discharge enters properly and prevents siphoning or overflow. Exceeding this distance would cause improper operation and violate code. Correct answer: C. 24 inches.